I think I've got part of the solution figured out. After digging into
the code a little and poking around console, I think I understanding
what's going on.
page_attachments is literally attached to a page with class Page. In
page_attachments_extension.rb, the PageAttachment stuff gets
class_eval'ed onto Page.
----------------------
Page.class_eval {
include PageAttachmentAssociations
include PageAttachmentTags
}
----------------------
Also, I see in the PageAttachment class definition:
class PageAttachment < ActiveRecord::Base
...
belongs_to :page
end
>From looking at a page with page type "Archive" in console:
#<ArchivePage:0x25cdc48 @attributes={"slug"=>"/",
"class_name"=>"ArchivePage", ....
This is no longer a page with class Page, it is an ArchivePage and
ArchivePage hasn't received the PageAttachment extensions.
As an experiment, I tried just duplicating the include code above and
eval'ing it on ArchivePage:
----------------------
ArchivePage.class_eval {
include PageAttachmentAssociations
include PageAttachmentTags
}
----------------------
I restarted my server and tried to edit the page, but got stopped with
an error:
SQLite3::SQLException: no such column: page_attachments.archive_page_id:
SELECT count(*) AS count_all FROM page_attachments WHERE
(page_attachments.archive_page_id = 1)
What I noticed after that was that PageAttachmentAssociations evals the
following when it gets included into a class:
has_many :attachments, :class_name => "PageAttachment", :dependent =>
:destroy
Adding :foreign_key => "page_id" should clear up the error that just
stopped us:
has_many :attachments, :class_name => "PageAttachment", :dependent =>
:destroy, :foreign_key => "page_id"
I restarted my server and tried to attach an image to the Archive page
and it worked. So now, the main issue is just figuring out a way to
include PageAttachments gracefully into all of the page types when the
extension gets activated. Anyone have any ideas?
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